GB1558903A - Systems for duplicating digital transmission channels - Google Patents

Systems for duplicating digital transmission channels Download PDF

Info

Publication number
GB1558903A
GB1558903A GB3099677A GB3099677A GB1558903A GB 1558903 A GB1558903 A GB 1558903A GB 3099677 A GB3099677 A GB 3099677A GB 3099677 A GB3099677 A GB 3099677A GB 1558903 A GB1558903 A GB 1558903A
Authority
GB
United Kingdom
Prior art keywords
channels
priority
channel
duplicating
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3099677A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FRANCE ETAT SERVICE POSTALE
Telecommunications Radioelectriques et Telephoniques SA TRT
Original Assignee
FRANCE ETAT SERVICE POSTALE
Telecommunications Radioelectriques et Telephoniques SA TRT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FRANCE ETAT SERVICE POSTALE, Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical FRANCE ETAT SERVICE POSTALE
Publication of GB1558903A publication Critical patent/GB1558903A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
GB3099677A 1976-07-22 1977-07-22 Systems for duplicating digital transmission channels Expired GB1558903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7622418A FR2359553A1 (fr) 1976-07-22 1976-07-22 Systeme de doublement de canaux de transmission numerique

Publications (1)

Publication Number Publication Date
GB1558903A true GB1558903A (en) 1980-01-09

Family

ID=9176019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3099677A Expired GB1558903A (en) 1976-07-22 1977-07-22 Systems for duplicating digital transmission channels

Country Status (4)

Country Link
ES (1) ES460987A1 (fr)
FR (1) FR2359553A1 (fr)
GB (1) GB1558903A (fr)
IT (1) IT1084991B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455824B1 (fr) * 1979-05-04 1986-02-21 Materiel Telephonique Dispositif de detection de defaut de transmission d'un signal numerique
FR2473820A1 (fr) * 1980-01-11 1981-07-17 Telecommunications Sa Procede et systeme d'initialisation de la securisation d'une ligne d'une artere de transmission numerique
DE3420365A1 (de) * 1984-06-01 1985-12-05 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren zur umschaltung zwischen redundanten uebertragungswegen
FR2574237B1 (fr) * 1984-11-30 1992-05-22 Telecommunications Sa Systeme de commutation pour reseau de transmission numerique
JPH01198834A (ja) * 1988-02-03 1989-08-10 Fujitsu Ltd 回線切替装置
DE3905689A1 (de) * 1989-02-24 1990-08-30 Philips Patentverwaltung Schaltungsanordnung mit zwei parallelen zweigen zur uebertragung eines binaersignales

Also Published As

Publication number Publication date
FR2359553A1 (fr) 1978-02-17
FR2359553B1 (fr) 1981-02-27
IT1084991B (it) 1985-05-28
ES460987A1 (es) 1978-11-01

Similar Documents

Publication Publication Date Title
US5069521A (en) Optical transmission apparatus
US4996695A (en) Arrangement for accessing and testing telecommunication circuits
KR930008709B1 (ko) 디지탈 전송 라인 루프 형성 방법 및 장치
CN101145942B (zh) 一种单总线主备保护设备串行总线故障检测方法
EP0624297B1 (fr) Systeme de communication
US3983340A (en) Automatic span line switch
US4042794A (en) Method and means for detecting an outgoing failure in a bidirectional communications span and looping the same in response thereto
GB1558903A (en) Systems for duplicating digital transmission channels
EP0203151B1 (fr) Boucle de renvoi dans une unite de canal de donnees
CA2165105C (fr) Dispositif pour controler l'integrite des chemins de transmission de donnees et les transmissions elles-memes
US5311551A (en) Digital signal hardware protection switching
JPS6224737A (ja) デイジタル伝送システムの未接続伝送区間のシグナリング信号を発生する装置
EP0954913B1 (fr) Procede de commande d'une unite de commutation et dispositif fonctionnant selon ce procede
JPH0271636A (ja) 時分割多重データ伝送システム
US6490317B1 (en) Data, path and flow integrity monitor
KR100300147B1 (ko) 디멀티플렉싱 장치의 동작 체크 장치
KR920007101B1 (ko) 전자교환기의 데이터 링크속도 정합장치
CA2088210A1 (fr) Methode de synchronisation d'elements de circuits de systeme de telecommunication
JPS6133418B2 (fr)
JP2538889B2 (ja) デイジタル多重通信路における保守情報伝達方式
SU1764177A1 (ru) Устройство дл автоматического переключени телеграфных каналов св зи
JPS61228756A (ja) キヤリア検出レベル自動設定方式
JPH037439A (ja) ディジタル通信回線の監視方式
JPS6148249A (ja) 回線切替装置
SU1374436A1 (ru) Устройство телеконтрол линейных трактов цифровых систем передачи

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee